Concentrating-table.



G. H. BLMORB.

GONGENTRATING TABLE. APPLIGATION FILED 00T. 29, l1910.

`Patented Mar. 18,1913.

2 SHEETS-'SHEET l.

G. H. BLMORE. CONGENTRATING TABLE.

APPLICATION FILED 0GT.29, 1910.

Patented Mar.18,1913.

2 SHEETS-SHEET 2.

i r,o5e,519.

( i-UY HVELMOE, 0F SWARTI-IIVIORE, PENNSYLVANIA.

CONCENTRATING-TABLE.

Specification of Letters Patent.

Patented Mar. 18, 1913.

Application led October 29, 191.0.v Serial No. 589,743.

To all inkom t may` concern Be it known that I, GUY H. ELMORE, a

citizen of the United States, residing at Swarthmore, in the county of.Delaware and State of Pennsylvania, have invented cerf,

tain new-and useful Improvements in Concentrating-Tables, of which thefollowing is a specification. V

This invention pertains to concentrating tables, which in the moregeneral features,

mounting, drive, etc., may be 'of usual orapproved construction, theobject of the apparatus about to be described being to increase verygreatly the capacity of the table, though at the expense of thecompleteness or closeness of separation. In other words, the purpose isto produce what might prop.-

erly be called .a roughing concentrating table, designed to veffect apreliminary concentration or separation, leaving the final and closerseparation to be effected. on a second or ordinary table. Under-thisplan of construction and operation, the capacity of theroughingconcentrating table will be,` approximately, from six to tentimes that of lthe ordinary table, and the conc'en tration. orseparation will be such that the concentrates of several ofthe roughingtables may be handled on a single ordinary table.

The present invention is designed primarily kwith reference to thehandling of coal in a finely crushed or pulverized cond-ition, and forremoving the refuse and fine .sulfur therefrom, and for use with lowgrade ores having a large proportion of tailings to concentrates. In thecase of coal the purpose is to make a clean product, with a concentrateof refuse carrying some coal, and in the case of ore', to produce aclean tailings prod uct and a concentrate carrying sometailings,relying, as above explained, u on the subsequent treatment uponan ordlnary table to complete the concentration and separation.

The accompanying drawings illustrate my invention in a preferred form.

Figure 1 is a top plan view of the table; Fig. 2, a longitudinalvertical section on the line 2-2 of Fig. l; Fig. 3, a transverse sectionon the line 3-3 of Figs. 1 and 2, looking to the left; Fig. 4, a sectionon the line 4 4 of Figs. 1 and 2, looking to the left; Fig. 5, a sectionon the line 5 5 of Figs. 1 and 2, looking to the right; Fig. 6, a viewshowing the ritiles decreasing in depth at one end; Fig. 7, a viewshowing the rililes of unequal length; Fig. 8, a top plan-View of aportion of one of the ritlles, and showing the form or outline of thedislchargefopening; Fig. 9, a top plan View of one of the outlet tubesor pipes; and Fig.

10, a vertical sectional Viewy of thesame.

Referring -to said drawings, A indicates the bed or tablev proper, whichis ordinarily made of wood, Abut may be of any suitable material,provided with longitudinal 'riflles B, preferably of the form indicatedin Figs. 3 and 4'. Onreferring to said figures it will-be noted thatfrom thev receiving orv vhigh side of the table each rifile' B has abeveled or slanting upper side a, an' upright wall b on the lower ordischarge side, and a shallow. smaller trough or channel c between thevertical and the oblique orv inclined walls, said channel beingprovided' with holes or. outlets, as hereinafter described. In thepreferred form these rifes B run the entire length ofthe table, and areof uniform depth throughout the length of the feed box orslightly more,this being the point at which the last row of holes transverse of thelength of the table is located. From this point they grow progressivelyshallower to the end of the table, as in Fig. 6. They` may also growprogressively longer as in Fig.V 7, and as is now some times done inother tables. The final row of 4holes or outlets should be parallelwiththe end of the table, 'orap'proximately so.

At suitable intervals in the length of the table are formed holes oroutlets d, as above. indicated, 'opening from the lowest point oftheritlie, groove or depression o through to theunder side of the-table,and in order to maintain these outlets of proper form and on the pipeand into the bottom of the table.

This is best. shown in Fig. 10.

To guard againstthe clogging of the outlet nozzles e, the hole orpassage through .them is made of materially increasing d1'- mensions incross section from the upper toward the lower end, as indicated in Figs.3 and 10, and further to insure clearance, the openings increase inwidth in the direction of flow of the water along the channels r', beingnarrowest atthe uppei or receiving side and Widest toward the deliveryside, as indicated in Fig. 9, wherethe arrow shows t-he direction offlow of the water` across the upper end or mouth of one of the nozzles.

`The several launders C, which are arranged Amounted upon a shaft Gr andacting against a roller f carried or journaled in the forked end of arodh H, guided in ways and attached to one end of the table, a returnspringI being employed to maintain the roller in contact with the cam.The table is provided' with metallic bearing blocks J, which slide uponguide rods K carried in rocking beams or hangers L, pivotally mountedupon supporting standards M carried by a base frame N of any suitableconstruction.

In order'to tip the table to any desired' degree to determine therapidity of flow of Water and coal, pulp or stock across its face,

there is provided a toggle support composed of two links g and l1.,connected at their inner ends to an intermediate sleeve block z', and attheiro-uter'ends, respectively, to a lug on the base frame N and toacollar y' on one of the rods K. A screw c is swiveled in the sleeveblock z', and'passes through a nutl 'Z pivoted in lugs or ears m on thebase frame N,l the opposite end of the screw being provided with ahand-wheel 7i by which it may be readily turned to straighten or to bowthe toggle, as desired. The mounting de# vices and actuating mechanismof the table constitute no part of the present invention, andaredescribed merely for the purpose vof setting forth a complete machine.

It is customary with concentrating tables generally to incline the tableboth longitudinally and transversely, andthat may be vdone in thepresent instance if deemed desirable, but I consider it sufficientordinarily to incline the table transversely, as 'indicated in Figs. 2,3, 4` and 5, provided the table be given a quick return movement towardthe feed end, so that there shall be a regular progression or advance ofthe heavy concentrates which lodge in the longitudinal riiiles orchannels. Where, as is frequently the case, the movement is alike inboth directions, the table is, of course, made slightly lower at itsdischarge end than at the feed end. It is also usual to deliver thewater and coal, pulp or other mineral substance, to the 'table at oneend or corner only, the longitudinal inclination tending to distributethe material over the entire length of the table. Under the presentplan, however, the supply launder is extended nearly the full length ofthe table and delivers thereto substantially from end to end,

the flow across the table being perpendicularl to its length and hencethe same at y all points. The longitudinal reciprocation of' holes,which row or series of holes advisably is parallel with the end of thetable, or in other words, they are progressively shallower from the lasthole in each, to the end of the rillle. This construction tends tolessen the quantity of tailings working out to the end of the riiie, andto bring the ore to the surface of the table,- so that they will bewashed over the lower edge of` the table. This slow and gradual movementis suiicient to cause the fine and heavy material, which settles in thedepressions c of the riflies, to Work longitudinally along saiddepressions until the outlets d are reached, and in this way theconstant discharge of such fine and heavy material through the pipes ornozzles! e is insured.

The travel of the water and coal, pulp or o re, as the case may be,transversely ot' the table is so rapid, relatively, that no considerablelongitudinal travel thereof is caused, and the material moves across thetable practically at right angles thereto.

As stated above, this table is designed more especially for handlingfinely pulverized coal or low grade ores. Much of the coal is found tocontain sulfur, which lies in thin films or layers between layers ofcoal, and it is only by finely pulverizlng the coal and separatlng thelayers so as to expose the sulfur, that it can be removed and washedoff. lBy making the riliies of the peculiar form here shown anddescribed, the sulfur, which is heavy, finds its way into thedepressions c, and thence through the outlet pipes or nozzles e into thelaunders by which 1t is carried oli' to a suitable receptacle for moreperfect separation and recovery.

Any form of riile which produces arelatively narrow channel for thevheavy materials or concentrates, at its lowest polnt, will serve thepurpose.

By reason of the outlets d, e, at intervals, in practice usually aboutfive feet, the table is in effect divided up into a series of relativelyshort decks, and the concentratesor heavier particles, instead of beingrequired to travel the entire length of the table, or to be Washed overits lower edge in order to escape,vhave only to traverse a rilile untilthe nearest outletdis reached whereupon it is permitted to escape. Thisgreatly facilitates the separation of the concentrates, and is the'clined concentrating table having longitudinal riflles provided atintervals with discharge openings through their bottoms for escape offine and heavy concentrates; means for reciprocating said tablelongitudinally and effecting a progressive travel of con.- centrateswithin the ritles from the feeding end toward the tail or discharge endof the table; and' a feeding launder extending along the upper side ofthe table throughout sub-4 stantially the whole length thereof.

2. In combination with a transversely inclined concentrating table,having a series of longitudinal riflles decreasing from full depth at apoint near the tail end ofthe table to zero at said end, and providedWith dischargev openings at intervals through their bottoms; a feedinglaunder extending along the upper side of the table throughoutsubstantially the Whole length thereof; and

means for effecting longitudinal reciprocation ofthe table, and eectinga progressive movement of concentrates in the ritlies toward thedischarge end of the table.

3. In combination with a concentrating table provided with longitudinalriliies having outlets through their bottoms spaced apart suitabledistances, the transverse rows of outlets dividing the table into aseries of decks or sections each having its outlets for concentrates;means for effecting a longitudinal reciprocation of the table, andeffecting a' progressive movement of concentrates lodging in theriflies, from the power or driving end of the table toward the Adeliveryend thereof; and a feeding launder extending throughout substantiallythe whole length of the table, and adapted to deliver material theretothroughout substantially its full length, said tablel being transverselyin- Aclined to cause aflow of the mass of mate rial fed, crosswise ofthe table.

4. In combination with a concentrating table provided with longitudinalriftles, and divided into sections or decks by transverse rows or seriesof outlets opening through the bottoms of the ritlles for the escape ofconcentrates; means for longitudinally reciprocating the table, andthereby eecting a progression of concentrates deposited in the rilestoward the delivery ends of said rilfles; and a feeding launderextending substantially the full length of the table, and deliveringmaterial thereto throughout practically the whole length of the table,said table being inclined downward transversely from the feeding laundertoward the dis` charge side of the table.

In witness whereof, I have signed my nameto this specification in thepresence of two subscribing Witnesses. L

GUY H. ELMORE.

